Rashi explains that the Hebrew word for sojourned includes an implication to Esav that Ya'akov observed all 613 mitzvahs even while living with his crooked uncle Lavan.

"613 mitzvahs" includes the entire Torah. But the Torah is divided into two parts: Man's obligations to Hashem and his obligations to his fellow man. One cannot just be a good person and ignore his responsibilities to Hashem. Neither can he be a religious person when it comes to serving Hashem but disregard the needs of others.

Ya'akov was a true saint who kept all of the 613 mitzvahs and served Hashem and his fellow man properly.

The following story recorded in Borechi Nafshi by Rabbi Zilberstein shlita illustrates how important it is to keep the Torah in its entirety.

A group of students of a certain yeshiva in Vilna were walking back to their rooms late at night, after a full day of studying Torah. A heavy fog made it impossible to see more than a few feet. Suddenly, they heard people behind them running towards them. Afraid that they may be muggers, the boys started to run as fast as they could. But they could hear the footsteps behind them following them.

Finally they got to the room where most of them lodged. They locked the door behind them and breathed a sigh of relief. However, a moment later, there was loud pounding on the door. The intruders claimed to be the Vilna Police, so they had no choice but to let them in. The policemen told the boys that they should consider themselves very lucky that they had not shot at them since they had not been able to see them and had shouted at them to stop; which they did not, causing the police to believe that they were muggers.

Once they were there, the police asked the boys to present their identity cards. Every boy showed his card except one who lived at a different address and explained that his card was in his room. The policemen would not concede and insisted upon going with him to his place of lodging and seeing the legal document. After he showed it to them, they left him in peace.

The next morning, the Mashgiach (spiritual supervisor) of the yeshiva addressed the entire student body. He said that he had heard what had happened the night before and was considering shutting down the yeshiva! As a matter of fact, he had already discussed this possibility with the rest of the staff.

The students were flabbergasted and could not fathom what they had done wrong. Surely the Rabbi wasn't upset that they didn't have their identity cards with them since everyone left them in their rooms. Finally he explained. "How could a group of yeshiva boys let their friend go with a bunch of policemen without accompanying him? First of all, it was extremely dangerous and second of all the boy must have been scared stiff. They should have gone together with him and stayed until the incident was entirely over. What is all of your Torah learning worth, if you don't know how to be concerned for one another?"

The Mashgiach taught them to keep all of the 613 mitzvahs; not just some of them.

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